Ammonium-nitrate explosive



"Ji KLFZiTINGTfiN DELAYVARE, JRSSIZGHOB KY, {31F FJIEMINGTON, DELAV AE-E, A. CORPORATION GE DELA- T 13. I. DU FONT DE NE- may; concern: it 1} Lion ecl States, and

Tl v in, in me 0011116}! of n on State oi Delawar have invented a C61- useful i "illll-lllii'iti) Hill the IOllOV-Jlllg' is a speci- T i'JhYAN, a :1 resident n relates to an improvement in a fin )lk'iSl ng explosives sen-s1- y ground oi opelleut o3? p vio of coiloioei'l nitrocelill yoveentage oi resid- 5% (liplienylnniine addition, a coating .1

i eteiuient such as iliniti'oto coi'ziue consisting" of to 5 V tc 76% l'llliOCEllHlOSC u ti jelly oi vnseli b: )iopell (liBlS such Nee coniimi'cisl elynamites once as 21 result 0t litu'i'y sto tel the War and sin-cc BEIlliZSl'iiZ tor commercial ess powdei".

tion I have also seea eiegfree o L control liability. l have discovered .fioilioaiion film: A ril Serial No. 556 422. A t 4 ample, as a liquid aromatic nitrocompound.

i m y also make use of smell percentages of tiered. aluminum, for example, to 5%, me purpose of. increasing the sensitiveof the explosive.

examples of compositions of dynaniites which wine within the scope of my inven tion I may cite the following although, as will be evident, it is possible to deviate widely from the compositions given Without departing II'OD'! any invent-ion.

(irounfi smokeless powdeziwn 42 15 Ground coin lite m .i 15 25 Ammonium nitrate- 45 '12 S 49 62 Sodium nit 1to 5 "2' Nitroglycerinc 2 2 3 2 Aluminum 2 Chalk- 1 1 l 1 l 'l Sulphlu C- 2 l toe proportions oi the essenco t" of the new explosive coinons should, ordinarily come within the following; ranges:

Ground propellant pmwler 10 to nungium nitra 5 to nus: preventing 1 to 10% Instead of sodium nitrate it may use other metal nitrates, particularly the nitsates ofalkali-foix "lg metals such as p0 tessnzm and barium.

The fineness of ground propellant may of course vary considerably. I have found however, that for the best results the fine noes slioull be such that all passes a 20 mesh 83722511, and at least 20% shall pass a mesh screen, i preferably drymy lngredien moisture content of 2% or less.

I have also discovered that it is possible to obtain satisfactory regulation of the temperature in a (lynamite contain ing :1 ground propellant and ammonium nitrate lo the addition to the dynamite of -cl flame-regulating maum chloride, ammonium sulphate, or other mah of dissociation this means I have e; n. fillilllg eonipositions comprisor examplo suitable l]? use as coal inino 'oh glosivo 1s follows: K

I Nitroglycerino r j/J Ground propeller powder Ammonium ui t1 te.l Sodium chlorule. Chalk 1 i may also if desirer adcl varying proportions of alkali-metal nitrate, Wood pulp or other materials normally made use of in. dynamite manufacturo I claim: l

1. A blasting explosive comprising 21mmonium nitrate and [more than of :1

finely ground propellant powdelx 2. A blaoting orzplosi'vea comprioing ammonium nitrate and :Ercom about 10 to of a finely ground propellem powder.

blasting oxploslva' comprising; from 5 to of ammonium nitrate and from about 10 to 50% of a finely ground propellent powder.

A blosting explosive comprising 5 to 80% of ammonium nitr from about;

10 to 56% of finely ground. EjIlTlUlZGlfiSS pow l mini; 49

5 to 8 0 of omnltl to 50% of l day, and Ewan v oX'in-o.

ground a fiamomogulati' t 01: an ollmll-fo'l 10. A blastr fiamwmgmlm soilin irate. In tostlmooy turo 

